Exploring the diverse landscape and evolving American culture of television, with American television writer and producer Norman Lear; writer Saul Austerlitz and comic Chuck Nice weigh in.

Host Neil deGrasse Tyson interviews world-renowned physicist Stephen Hawking.

Host Neil deGrasse Tyson features his interview with astronaut Scott Kelly.

Host Neil deGrasse Tyson interviews world champion surfer Kelly Slater.

Host Neil deGrasse Tyson interviews puppeteer Frank Oz.

Host Neil deGrasse Tyson features his interview with neuroscientist Sam Harris.

Discussing science and technology with comedians and celebrities of media, science and pop culture.

Host of "The Late Show," Stephen Colbert.

Actor and science communication advocate Alan Alda.

Neil deGrasse Tyson interviews filmmaker and Nat Geo explorer-in-residence James Cameron.

Discussing science and technology with comedians and celebrities of media, science and pop culture.

Discussing science and technology with comedians and celebrities of media, science and pop culture.

Neil deGrasse Tyson interviews legendary oceanographer Sylvia Earle and aquanaut Fabien Cousteau.

Host Neil deGrasse Tyson features his interview with master navigator Nainoa Thompson.

Discussing science and technology with comedians and celebrities of media, science and pop culture.

Host Neil deGrasse Tyson features his interview with former head of DARPA Arati Prabhakar.

Host Neil deGrasse Tyson interviews pop-culture icon Ben Stiller.

Host Neil deGrasse Tyson features his interview with filmmaker and comic book fanatic Kevin Smith.

Neil deGrasse Tyson features his interview with journalist and news anchor Katie Couric.

David Crosby discusses how science influenced his songwriting with Neil deGrasse Tyson.

Neil deGrasse Tyson features his interview with Jane Goodall and discusses chimpanzee behavior with Chuck Nice and Jill Pruetz.

"Family Guy" creator Seth MacFarlane, in a departure from the type of material he is best known for, pays homage to Carl Sagan's award-winning and iconic "Cosmos" with this docuseries. Through stories of humankind's quest for knowledge, viewers travel across the universe. Scientific concepts are presented clearly, with both skepticism and wonder, to impart their full impact. Renowned astrophysicist Neil deGrasse Tyson hosts, and Sagan's original creative collaborator, Ann Druyan, serves as an executive producer.

Improv actor and comic Stephen Colbert flexes the hosting muscles he honed over nearly 1,500 episodes of the popular and critically celebrated "The Colbert Report" at the helm of this long-running late-night talk show. Following the genre's classic formula, each show kicks off with a monologue and a look at recent headlines, and features sketch comedy, celebrity interviews and musical performances. Joining Colbert is his bandleader, Julliard-trained Jon Batiste, and house band Stay Human. The show is filmed in New York's famed Ed Sullivan Theater, the longtime home of "The Late Show."

Oscar winners Ron Howard and Brian Grazer put their storytelling acumen to work as executive producers of "Breakthrough," a series of hourlong documentaries highlighting the stories, people, and technology behind the world's most cutting-edge scientific innovations. After considering more than 100 scientific topics for the series, the pair -- helped by National Geographic archives and research, along with the scientific resources of partner GE -- selected biotechnology, neuroscience, anti-aging technology, alternative energy, water conservation, and global pandemics. Each episode is directed by a prominent Hollywood star -- Howard himself helms "The Age of Aging," joining actors Angela Bassett ("Water Apocalypse") and Paul Giamatti ("More Than Human"), directors Peter Berg ("Fighting Pandemics") and Brett Ratner ("Decoding the Brain"), and screenwriter Akiva Goldsman ("Energy From the Edge").

Hailing from Rockefeller Center in the heart of New York City, Jimmy has made it his mission to make sure viewers end the day with a smile. Each weeknight, he hosts A-list guests, from movie stars to athletes, comedians, public figures and everyone in between. He also delivers a signature nightly monologue, performs in topical comedy sketches, plays fan-favorite games, and presents recurring segments like Thank You Notes. Today's popular musical guests also stop by to perform alongside house band The Roots.

Actor Kal Penn is producer/host of a series that attempts to explain how things like money, sex, food, sports and crime influence daily lives. The consequences are shown by analyzing data maps, and episodes investigate different themes through data mapping, creative visualization of information and in-depth personal stories involving fascinating characters. As well, documentary vignettes tell stories that personalize the number crunching, introducing real people who live and work at key intersections of each theme being explored. Penn serves as guide, making the information relatable to viewers.

Broadway, television and film star James Corden takes over the reins of the late-late-night franchise at CBS from fellow U.K. import Craig Ferguson. The British performer -- whose previous hosting gigs include five years of The Brit Awards -- puts his charm, warmth and creative instincts to use as he interviews celebrities and newsmakers, and hosts musical performances in his post-"Late Show" time slot.